Genomic Diversity within the Enterobacter cloacae Complex
Author Information
Author(s): Paauw Armand, Caspers Martien P. M., Schuren Frank H. J., Leverstein-van Hall Maurine A., Delétoile Alexis, Montijn Roy C., Verhoef Jan, Fluit Ad C.
Primary Institution: University Medical Centre Utrecht
Hypothesis
Can multilocus sequence analysis and comparative genomic hybridization improve species identification within the Enterobacter cloacae complex?
Conclusion
The study concludes that the Enterobacter cloacae complex is evolutionarily divided into two genetically distinct clades, necessitating a redefinition of some species.
Supporting Evidence
- Multilocus sequence analysis and comparative genomic hybridization were effective in identifying genetic differences.
- The study identified genetic markers that can help redefine species within the Enterobacter cloacae complex.
- Isolates from the first clade were more frequently cultured in hospitals compared to those from the second clade.
- Phenotypic identification methods were found to be unreliable compared to genetic methods.
Takeaway
Scientists studied a group of bacteria called Enterobacter cloacae and found that they can be split into two different families based on their genes, which helps in understanding infections better.
Methodology
The study used multilocus sequence analysis and comparative genomic hybridization to analyze 158 isolates of the Enterobacter cloacae complex.
Potential Biases
Potential bias due to the predominance of isolates from clinical settings in the first clade.
Limitations
The study's findings may be influenced by the limited number of isolates from the second clade represented in the microarray analysis.
Participant Demographics
Isolates were obtained from various hospitals in the Netherlands and Europe, including both clinical and fecal samples.
Statistical Information
P-Value
p<0.05
Confidence Interval
95% confidence interval 0.72–1.45
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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